The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1987
Filed:
Sep. 17, 1986
Brian E Shawcross, Cheadle Hulme, GB;
CIBA-GEIGY AG, Basel, CH;
Abstract
A device for holding photosensitive material during light exposure which comprises two planar frames of equal size, each of which has two parallel walls and rounded corners, one frame at least being open between its four walls, each frame carrying around its peripheral walls a band of resilient material of rounded cross-section which when the device is in the non-use state is so mounted that part of the band is held above walls of the frame, the sides of each frame being bevelled outwards, together with means to hold in position the two frames separated from each other with the bands of resilient material facing each other, means to force the two frames together so that the bands contact each other substantially over their entire length and force each other down the walls of each frame and means to hold securely the two frames in this position. The device is of particular use for exposing holographic film material.